Antifrost device



Dec. 2v, 1930. E. A. 'rl-HEMv ANTIFRQsT DEVICE Filed oct. 10K, 1929 ElfiI A MVENTQR l Edward@ Thiem ATTORNEY retenes new, rasgo "OFFICE.ANTIFROST DEVICE applicati@ mea october io The present inventionrelates to anti-frost devices particularly designed for use in con-1gelction with the windshield of an .automo- 1 e. An object of myinvention is to provide a' frame formed of angle iron, within which issuitably'secfuredatransparent sheet and a continuous sealing strippositioned inside the anged frame and with vacuurngcups 10...supportedupon the ends of the iframe 'to cause the same to adhere to a pane ofglass and wit the vacuum cups so supported in an oiset relationship tothe end of the frame as not to interfere withl the sealin strip.

I am aware that it is old as in t 'e patent to ...Harry H. Steinman,Nzumber 1,681,443,- dated August 21, 1928,'to build a frame off, thisgeneral type,'but, in the clraracter of frame shown in that patent inthe forml of a 2 one-piece angular frame,'the frame can only be obtainedby cutting and, consequently,

wasting material, andit has been my object-,l to secure a frame where anarrow strip of angle iron can be used and can be bent and attachedtothe end bracket's without cutting, and wherein the frame sides may bebent and joined to the brackets without any bend#l Aing irregularities.to bring about/ a smooth, bended frame.AVV l ,f f j lTo, this end,I'bend-"two strips ofthin, angular material to form the topfand bottomof the frame, so holding the metal in the bending process as tomake aparticulart, ly smooth bend,A permitting an accurate "J fitting of thetransparent sheet within the flange of the frame, and then separatelyjoining the ends of these two sections-to the brackets.

These and other features of my .invention will be more specifically set,orth in the following description and accompanying drawings, wherein: i1

Figure 1 is a view finished product. l

' Figure 2 is a sectional-view on line 5-5 of Figure 1; and Figure 3 isa sectional vView on line 6--6l of Fi y re 1.' f

Reaurring to the drawings in detail, Fig-- ures 1 to 3'sho'wmy improvedframe. Thls in top elevation of thel 1929. serial' No. 398,651.`

frame is formed of two members, 2 andv 3, of narrowangle sheet metaleach member being curved at its ends tomerge into an end portionstanding at substantially right angles to the 4length of the angledstrip. The adjacent ends of the two members 2 and 3 'are separatelyconnected to bracket portions 4:. as by welding. These bracket portionsjoin 'the bent ends of theadjacent members 2 and 3 to vform the ends ofthe lframe.

Vacuum cups 5 are supported in the brackets in a position oiset from4,the frame and are held in position as byA thumb screws 6.

- I have shown in the drawing the bracket portions extending inwardlyfrom the ends `of the frame, asa preferred construction, but, .it isapparent,lthat they `might equally extend outwardly from the ends of theframe within the concept o my invention. Y Y Within the frame thusformed by the angle strip, I secure in suitable manner the transparentsheet 7 and a sealing strip 8 extending around the edge ofthetransparent sheet' inside the flange. Whether the bracket portions areoii'set inwardly from the ends of F the frame, or outwardly,it is theintention `of myinventionthat the vacuum cups shall be spaced by thebracket portions from the end'y of the frame, and the sealing strip, soas notjtovv interfere with thecontinuity of the Asealing strip,'therebysecuring a completely closedfdead-air' space behind :the transparentsheet whenthehdevice is placed in adhering vposition upon a windshieldby vmeans of the vacuum cups, with the sealing strip in contact with theglass.

The separate welding of the members 3 and 4 to thev bracket portions,brings about ,af ,particularlyrsti and strong construction of frame. w

s I claim: 5

1. A windshield anti-frost device, consisting of a frame comprising twostrips oigangular metal with their free ends bent at sub stantiallyright angles with the body of the strips, bracket portions separatelyconnected to and sup orting adjacent endsfof said metal strips to orm aframe end, a transparent sheet secured inside the flange of said frame,a sealing strip secured around the edge of the transparent sheet insidethe ange of the frame, and vacuum cups supported by said brackets in aposition spaced from the ends of the frame and said sealing strip.

2'. VAn anti-frost shield, comprising a frame formed of angular, strimetal bent inwardly at the free ends thereo and having the free endsthereofV in abutting relation, bracket means secured to said free endsto hold said ends in abutting relation, a transparent sheet insertedwithin said frame, sealin means eX- tending beyond the lower edge o saidmetal frame, and vacuum cups carried by said brackets to secure thedevice in position,

3. An anti-frost shield, comprising a frame y formed of angular stripmetal bent inwardly and having the free ends thereof in abutting Yrela-tion, bracket. means secured over said abutting free endsto concealsaid ends, ar transparent sheet inserted in said frame, an

insulative strip around said frame and extendin'g'ibelow the lower edgethereof, and a vacuum up connected to each oflsaid bracketsto supportthe"devic e.

In testimony EDWARD A. THIEM.-

whereof'I aix my signature.

